Knowshon Moreno, who may need surgery on his left knee, revealed the Dolphins were "the only team that reached out to him during free agency."
Citing a source who's seen Knowshon Moreno's knee, the National Football Post's Jason Cole reports the issue is "bad."
A source with knowledge of the situation tells Profootballtalk the "medical issue" holding Knowshon Moreno out of spring practices is a knee injury, and Moreno "may need arthroscopic surgery."
According to the Palm Beach Post, Knowshon Moreno is "mostly hanging out on the sidelines and being timed while he runs" at Dolphins minicamp.
A source tells the South Florida Sun-Sentinel that Knowshon Moreno has been battling a "medical issue" during OTAs and minicamp.
According to the Miami Herald, Knowshon Moreno "appears to have lost some weight" after reporting to OTAs out of shape.
Knowshon Moreno admitted his fitness is "definitely not there."
Knowshon Moreno has been working "primarily with the second team" in Dolphins OTAs, while coach Joe Philbin believes his conditioning "could be better."
Knowshon Moreno opened Dolphins OTAs as the first-team running back.
Speaking Tuesday, Dolphins coach Joe Philbin praised Knowshon Moreno's "versatility and multiple skill-set."
Knowshon Moreno's one-year contract with the Dolphins has a base value of $3 million, including a $500,000 signing bonus.
New Dolphins OC Bill Lazor has a run-heavy background dating back to his 2004-2007 run as an offensive assistant on Joe Gibbs' staff.
Dolphins agreed to terms with RB Knowshon Moreno, formerly of the Broncos, on a one-year contract.
Broncos coach John Fox stated on ESPN's NFL Insiders Monday that Denver is "definitely" open to re-signing free agent Knowshon Moreno.